Toilet waste tank



FIG. 1 is an upper front perspective view of a toilet waste tank showing my new design;

FIG. 2 is a lower, rear perspective view;

FIG. 3 is a top plan view;

FIG. 4 is a front elevational view;

FIG. 5 is a rear elevational view;

FIG. 6 is a right elevational view;

FIG. 7 is a left elevational view; and,

FIG. 8 is a bottom plan view. 

The ornamental design for a toilet waste tank, as shown and described. 